Ring spinning frame



vJune 12, 1934. E. wENzEL vRING: SPINNING FRAME Filed Jan. 25, 1932 4 Sheets-Sheet l 1 NVENTIH June 12, 1934. l E WENZEL 1,962,265

RING SPINNING FRAME Filed Jan. 25. 1932, 4 Sheets-Sheet 2 .fmllllllllllllllylllluluh 27 3 ""Illlln'mmffv y' [lll/[IWA la" n l l E uumlullllml June 12,'1934. E. WENZEL RING SPINNING FRAME Filed Jan. 25, 1932 4 Sheets-Sheet 3 Jue l2,` 1934.

Y E. wENzEL.v

RING SPINNING FRAME Filed Jan. 25, 1932 4 Sheets-Sheet 4 Patented June 12, 1934 PATENT 'OFFICE RING SPINNING FRAME Emil Wenzel, Aue, Germany, assignor to Ernst Gcssner Aktiengesellschaft, Aue, Germany, a

corporation of Germany Application January 25, 1932, Serial No. 588,750 In Germany November 14, 1931 1o claims. (ci. 11s-39) My invention relates to improvements in ring spinning frames of the type having spinning tubes and in which the latter on its lower endare provided with a twisting needle which gives the thread the required twist, and in which the thread isA introduced in the spinning tube by means of an air current. The improvements forming the subject-matter of my invention not only refer to the construction and arrangement of the spinning tube but also to the construction and arrangement of the thread guide rail and, furthermore, to means for catching a broken thread. Finally my invention relates to the drive el the spinning tubes. l

In `order that the invention may be clearly understood and readily carried into effect, a pre-'- ferred embodiment of 'the same is illustrated by way of example in the accompanying drawings in which v Figure 1 is a schematicview of the general arrangement of .the parts under consideration of a ring spinning frame designed according to my invention,

Figure 2 is a fragmentaryfront view of the up-l per portion of Figure 1, i

Figure 3 is a sectional view of the spinning tube with the means for feeding the air current, the thread g'uide rail, delivery cylinders andl drawing rollers, on an enlarged scale, Figures 4 to 'I are details of parts shown in Figure 3, v

Figure 8 illustrates a modified form of some parts! Figure 9 shows the means for catching a broken 35 thread,

Figure 10 shows a modied form of the means shown in Figure 9,

Figures 11 and 12 are an elevation and a plane view, respectively, and show the drive of the spinning tubes.

. As will be seen from Figures 1 and 2, the ring spinning frame generally comprises the delivery cylinders 13, the thread guide rail 14, spinning tubes 15, drawing rollers 16, spindles 17 and travellers 18. Each spinning tube 15 has xed to it, a driving pulley 19 and is set in rotation by av vided on its upper surface with downwardly tapering guide grooves 23 which on their lower end carry special thread guides.

In the known spinning tubes the compressed air serving to introduce the thread 21 is supplied by means of an annular nozzle. Such annular nozzles, however, are not only very dimcult to manufacture, but also unsatisfactory in operation. In contrast thereto, according to my invention the compressed air is fed to the spinning tube by means of a nozzle which centrally opens into the spinning tube. Figure 3 shows this nozzle 24 which advantageously is hingedly mounted on an air feed pipe 25 leading from the compressor or compressed air tank. As clearly to be seen in Figure 3, the pipe 25 has a lateral hole 26 which in the working position of the nozzle 24 registers with the passage of the latter so that the compressed air can pass from pipe 25 through the nozzle 24 andthus to the respective tube 15. By turning the nozzle 24 to the inoperative po'- sition shown by dotted lines in Figure 3, the hole 26 is closed by the full portion of the shell of the nozzle so that the air supply is shut off. It is to be understood, however, that nu invention isnot vconfined tothe special air supplying means here- In the embodiment illustrated in Figure 3-the thread guide rail 14 is pivotallymounted at 29 on the machine frame 28 and is heldin position by supports 30 in turn pivotally connected to it at. 3l. The supports 30 by their lower ends engage overeccentrics 33 mounted on a shaft 32 so that the supports 30 execute a longitudinal shifting motion when the shaft 32 together with the' eccentric 33 is turned. In this waythe guide rail 14 Vmay accuratelyk be adjusted relatively to the flared-up mouth of the spinning tubes 15.

A separate thread guide member 34 is fixed to the lower end of each guide trough 23, which guide members preferably are made of a material of less wear such as porcelain or glass, and are exchangeable.l In lieu ofthese guide members 34a horizontally extending glass bar 35 may be provided on the rail 14, as illustrated in Figure 6,

As already stated, the spinning tubes 15 have a flared upper mouth. As will be seen from Figures 3 and 7, radially extending ribs or projections 36 may be provided on the inner wall of the ared mouth so as to form entrance grooves between them. Upon rotation of the tube the projections strike the thread and impart toit a. certain vibrating motion. Each spinning tube 15 is rotatably mounted in a bearing bracket 38 and these brackets in turn are mounted on a common supporting rail 39, Figure 3, any suitable means (not shown in the drawings) being provided for imparting a vey slight to and fro motion to the rail 39 and thus to the brackets 38 in the direction of the axes of the drawing rollers 16, 16a, Figure 3, as marked by the arrow y in Figure 2, in order to prevent grooving of the drawing rollers. The one drawing roller, 16a, is mounted stationarily whilst the roller 16 is slightly pressed toward the companion roller 16a. by a hookshaped bifurcated swing arm 40 hinged at 41 to the one arm of a bell-crank lever 42 fulcrumed at 43 in the machine frame and the other arm of which carries a weight 44. The latter may be made adjustable if required. When the thread is to be introduced between the drawing rollers 16, 16a, it is only necessary to manually withdraw the arm 40 by means of its projection 45 in the direction of arrow x, Figure 3.

In the embodiment illustrated in Figure 8 the bearing bracket 38 of the individual spinning tube 15 is mounted on a cylindrical bearing projection 47 of an intermediate fixed bracket 46, the center of the projection 47 at least approximately coinciding with the point of the twisting needle 20. Furthermore, the thread guide rail 14 is hingedly connected at its lower end by journals 48 to the bearing bracket 38 whilst on its upper end it is not hingedly connected to a fixed rail 28 of the machine frame by its projections 39, but can freely slide with the latter on rail 28, as indicated by double arrow z in Figure 8.

On a rear arm of each intermediate bracket 46, Figure 8, is mounted a common shaft 49 which carries small cam discs 50 the cams of which each engage a corresponding recess 51 of a rearward projection of each bracket 38. Upon shaft 49 being turned the bracket 38 thus is swung about the effective axis of the cylindrical bearing 47, the thread guide rail 14 partaking of this motion by virtue of its hinged connection described above, and its projections 39 sliding on the fixed rail 28. By means of the described arrangement it is possible to adapt the angle formed by the axis of the spinning tube 15 and the surface of the guide rail 14 to the nature of the thread.

Now it may occur that the thread'which arrives at the spindle at a certainangle, breaks on its way from the drawing rollers 16, 16a to the spindle 17 on which it is wound with some coils. As in such a case also the thread is farther fed by the spinning tube 15 and the drawing rollers 16, 16a, then, before the respective spinning unit or the whole machine is stopped, the loose end of the broken thread comes into contact with the traveller or the spindle, which may cause much turning the spindle back. This manipulation is avoided according to my invention by the fact that a member is provided which projects into the straight path of the thread 21 on its way from the drawing rollers to the spindle point,

such as a suitably shapedy small wire bar 55, in such a manner that the thread is deflected from its usual path and runs from the bar 55 to the spindle axially tothe latter. In this case, when the bobbin 54 is full, the coils on the spindle point become loose automatically. This arrangement is known in itself I combine it, however, with the trough 52 above described. For, if the latter is pivoted to the transverse bar 53, see the position in dotted lines in Figure 9, a stop 52a may be provided underneath the trough 52 which stop limits the swing motion of the latter, and the front edge of the trough may extend upwardly to such an extent as to lie in the path of the thread and defleet it as described above. The front edge of the trough thus may replace the delecting bar 55. If, however, the trough 52 is rigidly fixed to the xedrail 28, as shown in Figure 10, deflecting arms 56 may be rigidly mounted on the transverse bar 53 which arms carry a deflecting bar 55 and can be displaced by turning bar 53. When the bobbin 54 is full, the coils on the spindle point then are made free by moving the arms 56 from the position shown in Figure l0 in full lines to that shown in dotted lines.

Finally, my invention has for its object to improve the drive of the spinning tubes 15 in so far as I provide means for driving them in groups of at least two tubes. As illustrated in Figures 11 and 12, I provide a common intermediate driving pulley 58 which is mounted on one arm of a bell-crank lever 60, fulcrumed at 59 on arms 28' rigid to the fixed rail 28, the other arm of bell crank lever 60 being located by a weight 61 or the like in such a manner as to uniformly and permanently tension the driving band 57. The band 57 comes from a main driving pulley (not shown), passes round the pulley 19 of the one tube 15 of the group, then round the intermediate pulley 58, and, finally, round the pulley 19 of the other tube 15 back to the main pulley. If desired, more than two spinning tubes 15 may be driven by one and the same band 57 by means of an adequate number of intermediate pulleys 58.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but whatA I claim is:

1. A ring spinning frame having spinning tubes, a compressed air nozzle for each tube adapted to introduce a thread into said tube, and an air feed pipe for said nozzles, each air 4nozzle being rockingly mounted on the air feed pipe and the passage of air from this pipe to the nozzle being automatically shut off by the rocking of the nozzle.

2. A ring spinning frame having spinning tubes, a compressed air nozzle for each tube adapted to introduce a threadAinto said tube, drawing rollers below said tubes, and a trough disposed beneath said drawing rollers wherein the thread is collected when broken.

3. A spinning frame comprising a. plurality of spinning tubes, drawing rollers positioned be- 1 low said tubes and to which yarn is delivered by said tubes, each tube having an axial opening outwardly flared at its upper end, an air nozzle for each tube having its air-delivery end substantially aligned with the axis of said tube and spaced above said opening, said nozzle delivering a close compact jet of air to said tube along the axis of said tube, and means to conduct a sliver into the upper end 'of said spinning tube at a point below the end of said air nozzle, said thread approaching said spinning tube at a substantial angle to the axis thereof and entering said tube through the annular space exterior to and surrounding the discharge end of said nozzle.

4. A ring spinning frame having spinning tubes, a compressed air nozzle for each tube adapted to introduce a thread into said tube, and a thread guide rail having tapering thread guiding grooves disposed between the delivery cylinders and the spinning tubes, said guide rail being tted with separate exchangeable thread guides mounted at the lower ends of said grooves, and said guide-rail being adjustable in its position and being mounted at a substantial angle to the axes of the spinning tubes.

5. A ring spinning frame having spinning tubes, a compressed air nozzle for each tube ,adapted 4to introduce a'thread into said tube,

-tric shaft.

6. A ring spinning frame having spinning tubes, a compressed air nozzle for each tube adapted to introduce a thread into said tube, a thread guide rail having, tapering thread guiding grooves disposed between the delivery cylinders and the spinning tubes, and a bearing bracket for each spinning tube, each bearing bracket being hingedly connected to the thread Aguide rail and being mounted in a manner so as to be swung about an axis approximately coinciding with the point of the twisting needle of the associated spinning tube.

' 7. A ring spinning frame having spinning tubes, a compressed air nozzle for each tube adapted to introduce a thread into said tube, a

thread guide rail having tapering thread guiding grooves disposed .between the 4delivery cylinders and the spinning tubes, and a bearing bracket for each spinning tube, each bearing bracket being hingedly connected to the thread guide rail and being mounted on a circular bearing surface, the axis of which approximately coincides with the point of the twisting needle.

8. A ring spinning frame having spinning tubes, a compressed air nozzle for each tubev adapted to introduce a thread into saidtube, a thread guide rail having tapering thread guiding grooves disposed between the delivery. cylinders and the spinning tubes, and a bearing bracket for each spinning tube, each bearing bracketbeing hingedly connected to the thread guide rail and being mounted on a circular bearing surface, the axis of which approximately coincides with the point of the twisting needle, and each bearing bracket being engaged by a cam rigid on a comi mon shaft while the upper edge of the thread guide rail slides freely on the machine frame.

9. A ring spinning frame havingspinning tubes. a compressed-,air nozzle for each tube adapted to introduce a thread into said tube, and a trough disposed underneath the drawing rollers wherein the thread is lcollected when broken, the iront edge of the trough being pivotally connected to abar, so that its free edge may deect the thread running to the spindle when moved to open position in order to loosen the thread coils on the spindle point after the respective bobbin has been completed, said edge leaving said thread free when in inoperative position.

10. A ring spinning frame having spinning tubes, a compressed air nozzle for each tube adapted to introduce a thread into said tube, and

a trough disposed underneath the drawing rollers wherein the thread is collected when broken, said trough being rigidly xed on the machine frame and arms being hinged to the trough, preferably to its front edge, which arms in operative position project into the path of the threads and deect said threads in order to loosen the thread coils on the spindle point, said arms leaving said thread free when in inoperative position.

' EMIL `WENZEL. 

